Well guys after I was up masterbating for a few hours i went to bed. When i went to have a shower the next day i had a huge buldge on the side of my penis. I didnt masterbate for a few days after this and the buldge has decreased into a smaller lump. This lump is hard and no bigger then a centimetre. Will this lump go away on its own or will i need to go see a doctor?